BS ISO 3639:1981

Cinematography. Projection reels/spools 75 to 312 mm diameter for 8 mm Type S motion-picture film. Dimensions and specifications.

STANDARD published on 15.1.1996

The information about the standard:

Designation standards: BS ISO 3639:1981
Publication date standards: 15.1.1996
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: British technical standard
Category: Technical standards BS